Oracle SQL, PLSQL, APEX How To's by Dr. S. Raghunathan - HTML preview
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'+' II :Pl-COUNTRY-CODE II '-' II :Pl-AREA-CODE II '-' II
:Pl-TELE-LINE
any valid expression used in sql statement or PL can alone be given in expessionl box for effecting computation'
→ Computation Conditions
→ condition is set for execution. For example if this page item is null then execute this computation etc' Normally, this will be enforced at the time of creating the computations'